Re: [dnssd] [DNSOP] Draft-ietf-dnsop-edns-tcp-keepalive and DNS Push Notifications

[Stuart Cheshire <[e-mail]>]

On 21 Mar 2016, at 20:02, Paul Wouters <[e-mail]> wrote:

> Our document is in AUTH48 already, so making those kind of changed there might be very difficult.

I didn’t realise that. I agree, it’s too late to make substantive changes at this point.

> Also, if you are so idle that you might run into tcp issues timing out, you probably should be nice to the other end and close your tcp session.

The idea of DNS Push Notifications is for moderately long-standing queries (on the order of 5-10 minutes) waiting to be notified of some change.

For example, you go to print, but the printer is turned off. You walk down the hall and turn the printer on, and when you get back to your office your computer has been notified that a new printer has become available (without you having to repeatedly cancel and try again until the printer shows up).

It’s not something that would be useful for all DNS servers. Think of it as a different protocol, that happens to leverage existing DNS protocols and message formats instead of inventing new protocols and message formats.

The draft explains it in more detail.

DNSOP feedback on the draft would be appreciated.

Stuart Cheshire